地理科学 ›› 1987, Vol. 7 ›› Issue (4): 297-305.doi: 10.13249/j.cnki.sgs.1987.04.297

• 论文 •    下一篇

中国东部晚更新世的环境变化

杨达源1, 冯文科2, 赵希涛3   

  1. 1. 南京大学大地海洋科学系;
    2. 地质矿产部第二海洋地质大队, 湛江;
    3. 中国科学院地质研究所, 北京
  • 出版日期:1987-07-20 发布日期:1987-07-20
  • 基金资助:
    国家自然科学基金

ENVIRONMENTAL CHANGES IN EASTERN CHINA DURING THE LATE PLEISTOCENE

Yang Dayuan1, Feng Wenke2, Zhao Xitao3   

  1. 1. Department of Geography, Nanjing University;
    2. South China Sea Geological Investigation Headquaters, Ministry of Geology and Mineral Resources, Zhan Jiang;
    3. Institute of Geology, Academia Sinica, Beijing
  • Online:1987-07-20 Published:1987-07-20

摘要: 近几十年来,大陆与海洋沉积物的研究已证实,距今约128-10ka间的晚更新世时期,全球气候与环境经历了一个完整的约为100ka周期的间冰期-冰期旋回,并包含多次次一级冷暖与干湿的交替变化。然而,中国东部由于处于比较特殊的地理位置-西依雄伟的青藏高原,东临浩瀚的太平洋-和比较特殊的气候类型-盛行东亚季风,因而对全球气候与环境变化的反应及其表现方式也不同于世界其他同纬度地区。

Abstract: The paleo-environmental changes during the late Pleistocene either in northern and southern parts, or in lands and seas of eastern China, were mostly non-synchronous. The oldest event of low temperature occurred during the Last interglacial period in the northern part of the South China Sea. The transitional period prior to the last glaciation came about in the northern part of eastern China about 115 ka ago. The desert environments of the inland of the northern China were developed both in the glacial maximum and in the warm interglacial period, but the loess accumulations mostly took place, during the glacial period. The sand dunes and the periglacial solifluctions in the lo wer Changjiang River region were formed during the last glacial period. Com paring the oxygen isotope curve with the paleo-temperature curve from the northern South China Ses, as well as the transgression-regression alignment from the southern Huanghai Sea, they are partly non-coordinate. The phenomena mentioned above were the result from following reasons that the paleo-environmental changes in eastern China were controlled by common factors leading to changes of worldwide environment, on the other hand, the different changes were related to the special geographical position, the topographic conditions and the monsoon circulation of east Asia as well as time lag required by adjusting process of varied changes themselves.